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Finding the Fourth Proportional to 18,904,859.60, 28,391,503.80 and 16,553,397.20

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Solution

The fourth proportional to 18,904,859.60, 28,391,503.80 and 16,553,397.20 is: 24,860,054.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,904,859.60 : 28,391,503.80 = 16,553,397.20 : x
  2. Step 2: Convert to fraction form
    18,904,859.60/28,391,503.80 = 16,553,397.20/x
  3. Step 3: Cross multiply
    18,904,859.60x = 28,391,503.80 × 16,553,397.20
  4. Step 4: Simplify right side
    18,904,859.60x = 469,975,839,506,709.38
  5. Step 5: Solve for x
    x = 469,975,839,506,709.38/18,904,859.60
  6. Step 6: Final answer
    x = 24,860,054.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.